Concrete mixer



Jan. 5 1926. 1,568,653

H. G. BUTLER ET m.

CONCRETE MIXER Filed August 1, 1924 2 Sheets-Sheet 1 HARRY Q BUTLER,

ALBERT F TE/cnm/v Eva/Ann Cnnn Zlwwmtom Jan. 5 ,1926. 1,568,653

H. G. BUTLER ET AL CONCRETE MIXER Filed August 1, 1924 2 Sheets-Sheet 2HARRY G. BUTLER, ALBERT l: Even/Mu, EDWARD 6mm,

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ing its work.

UNITED STATES PATENT OFFICE.

HARRY G. BUTLER AND ALBERT CARR,

F. rmonmn, or emomna'rr, onro, AND nnwann OFLUDLOW, xnn'rucxr.

CONCRETE MIXER.

Application filed August 1, 1924. Serial m. 729,624.

T 0 all whom it may concern:

Be it known that we, HARRY G. BUTLER, ALBERT F. TEICHMAN, and EDWARDCARR, citizens of the United States of America, and residents ofCincinnati, Cincinnati, and Ludlow, in the counties of Hamilton,Hamilton, and Kenton, and. States of Ohio, Ohio, and Kentucky,respectively, have invented a new and useful Improvement in ConcreteMixers, of which the following is a specification.

An object of our invention is to provide means for use withconcretermixers, generally referred to as the side loader type, thatwill obviate the difiieulties and objections heretofore encountered insaid devices,

in that great difliculty was encountered in discharging the loaderbucket whereby the sand, cement and crushed rock is introduced into thedrum or mixing barrel. 1 Another object of our invention is to pro-'vide a simple and eflicient device for the objects stated.

' Another object of our invention is to provide a device that isautomatic in perform- These and other objects are attained by the meansdescribed herein, and disclosed in the accompanying drawings, "in which:

Fig. 1 is a slide elevation of a concrete mixer embodying our invention.F Fig. 2 is a sectional view on line 2-2 of i i Fig. 3 is a fragmentalplan view of the device embodying our invention.

Fig. 4 1s an end view ofthe device shown in Fig. 3.

Fig. 5 is a side view of an oscillating arm shown in Fig. 4 and forminga detail of our invention. 1

Our invention as disclosed herein is shown as. applied to an arbitrarymixer, for example as shown in the patent to J aeger 111,390,442 ofSeptember 13, 1921, .wherefore no detailed explanation thereof will begiven.

Briefly the device comprises a frame 10 supporting a revoluble shaft 11from which orted by the frame a mixing barrel 12 sup 9. ring gear 13caris actuated by means 0 ried by the barrel 12, and a plmon, no shownherein, carried by the shaft 11, and

engaging the ring gear 13. The shaft 11 is ,driven from any suitablesource, for example combustion engine that may be asof such bucket fordischarging the contents thereof through the chute 16, forming a part ofsaid or drum 12. The bucket 14 is raised and lowered by means of cables17 that may be wound and unwound by means ofs 001$ 18 carried by a shaft19 driven from t e shaft 11 by any suitable means, for example the chain20, sprockets 21 and 22 and'the lever controlled clutch 23. Ourinvention is concerned'with means for vibrating the bucket 14 when it isin its raised or elevated osition, whereby to cause the contents 0 thebucket 14 to expeditiously discharge into As shown. herein the bucket 14may be supported b an intermediate frame of substantially r ghttriangular prismatic form comprising struts 23 and 24 that are pivotedat 25 upon the "frame 10. The struts 24 carry a plate 250 that isengaged by a vibrating lug 26. The lug 26 1s carriedby a shaft 27mounted upon the frame 10, and said shaft 27 is oscillated by means ofan oscillating arm 28 carried by saidshaft and which arm has its free orouter end pivotally connected with a rod 29 having an eccentric bearingupon the shaft 11. By reference to Fig. 2, it will be readily evidentthat when the bucket 14 is moved to the mixing drum 12.

bucket, into the mixing barrel its elevated 'or discharge position, thevibrat- 7 ing spaced by a recess or notch 32 extending between theforward faces33 and 34 of said extensions.

that the notch 32 is not essential and may t be dispensed with.

It will be readily evident It will be observed that the intermediateframe is hinged along one of its acute an led corners to the mixersupporting fra?" e, with its right angled corner uppermost, when theprismatic frame is in lowered position, and that the bucket is hingedupon said right angled corner, by means of bars 251. A spring 252yieldingly retains the bucket upon the intermediate frame. It will befurther noted that the vibrating lug operates upon the intermediateframe, and the intermediate frame in turn transmits such vibration tothe bucket. The spring 252 yieldingly retains the plate 250 inengagement upon the vibrating lug. Although we have disclosed ourinvention as applied to a machine as disclosed in the herein mentionedpatent to J aeger, it is to be understood that it is not intended torestrict our invention to this particular type of machine, but that samemay be readily applied to other types of mixers, and that modificationsmay be made in the device invented by us for adapting same to othertypes of mixers, without deviating from our invention.

In the operation of our device, thelug 30 is oscillated continuouslyfrom the shaft 11. The drum 12 operates continuously. Normally thebucket is in its lowermost posi tion, for example as shown in Fig. 1. Inthis position, workmen deposit sand, cement, crushed rock and the likein the bucket. The bucket is then raised by means of the clutchmechanism 23, shaft 19 and cables 17, whereby to elevate the end 15 ofthe bucket above the barrel l2 and to dispose the free end of thechute-like extension 16 of the bucket 14, in such position that thecontents of the bucket 14 may find their way into the barrel 12. At, orabout the time when the bucket 14 reaches its uppermost position, theplate 25 is brought into engagement with the oscillating lug 30. Themovement of the lug relative to the plate 25 imparts a series of joltsor vibrations to the bucket 14 that precipitates the contents of thebucket 14 into the drum 12. In Fig. 2 the lug 30 is shown in threepositions. In the first position, shown in full lines, the lower end ofthe extension 31 has moved the plate 250 in a clockwise direction,

for a very small distance. Upon the movement of the lug 30 to the secondposition, shown in dotted lines, and wherein the faces 33 and 34 of thelug engage the face 35 of the plate 25, the movement of the bucket 14 ina clockwise direction is precipitously arrested by contact of the faces33 and 34 upon 35, and this arresting motion checks the bucket 14, whilethe contents of the bucket continues its movement because of itsimpetus, to and into the barrel 12. The movement of the lug to the thirdposition, shown in dotted lines, and wherein the extension 30 aloneengages the plate 25 serves merely to again move the bucket in acounter-clock wise direction preparatory to arresting the movement ofthe bucket in a clockwise direction for further movement of the contentsof the bucket toward the drum 12. It will be readily evident that a veryshort period of vibration of the bucket 14 is required to discharge thecontents thereof, into the barrel 12.

What we claim is:

1. In a device of the class described the combination of a frame, amixing vessel supported'by the frame, means for actuating the mixingvessel, a vibrating lug carried by the frame, and actuated from thevessel actuating means, and a bucket for movement relative to saidmixing vessel, and arranged for engagement by the vibrating lug forexpediting discharge of the bucket into the mixing vessel.

2. In a device of the class described the combination of a frame, amixing drum carried by the frame, and having an opening therein, a lugcarried by the frame and mounted thereon for oscillation, means foroscillating the lug, a bucket pivotally carried by the frame, arrangedto assume a lowermost position for receiving materials to be depositedin the mixing drum, and means for moving the bucket about its pivotalmounting for placing the bucket in position to discharge into theopening in the drum, and for engagement upon the vibrating lug, wherebyvibratory motion may be imparted to the bucket for expediting dis chargethereof into the mixing drum.

3. The combination with a mixing vessel,

a frame for supporting the same and a.

bucket for the materials to be mixed, of an intermediate frame ofsubstantially right triangular prismatic form hinged along one of itsacute angle corners to the mixer supporting frame with its right anglecorner uppermost when the prismatic frame is in lowered position and towhich the intermediate frame the bucket is hinged along its right anglecorner, means for elevating said bucket and intermediate frame, andmeans whereby the intermediate frame is arrested in its upward movementwithout arresting the upward movement of the bucket, and arranged forvibrating the bucket.

4. In a device of the class described the combination of a container fortreatment of materials, a tiltable bucket for discharging into thecontainer, means for vibrating the bucket when in discharge position,and c0mmon means for actuating the container, the bucket and thevibrating means.

5. The combination of a mixer comprising a drum, a tiltable bucket fordischarging into the drum, and means for revolving the drum and tiltingthe bucket, of a vibrating device operative from said means forprecipitating discharge from the bucket into the drum.

6. In a device of the class described, the combination with a mixingdrum, of a filling bucket ada ted to assume upper and lower positions orrespective loading f of the bucket and unloading of the bucket into saiddrum, means for actuating the mixing drum, and'for moving the bucket toits upper position, and a vibrator operative from said"- means forvibrating the bucket in its upper position for expediting discharge ofthe bucket.

7. The combination of a mixing vessel, a frame for supporting thevessel, a bucket, a link hingedly connected with both the bucket and theframe, means for elevating both the bucket and the link, said means alsoadapted to actuate the mixing vessel, means for arresting the upwardmovement of the link when the bucket and the link are raised withoutarresting the upward movement of the bucket, and vibrating means foroperation on the bucket when in its elevated position for discharginginto the mixing vessel, the means for elevating the bucket serving alsoto actuate the vibrating means.

8. In a device of the class described. the combination of a frame, arevolving drum carried by the frame, the drum being open at one end, arevolving shaft, means for transmitting rotation from the shaft to'thedrum, a bucket hingedly mounted on the frame, the bucket comprising anend for receiving substance to be mixed, and a chute for directingsubstance from said end when elevated, to the opening in the barrel,means operative from the revolving shaft for raising and lowering thebucket, an oscillating lug mounted on the frame, a connection betweenthe revolving shaft and the oscillating lug whereby rotatory motion ofthe shaft is converted into an oscillatory motion of the oscillatinglug, the means for raising and lowering the bucket serving to bring the.

bucket into position for operation thereon of the lug when the bucket isin'an elevated position, and to permit movement of the bucket to itslowermost position wherein the

